by National Aeronautics and Space Administration, Ames Research Center, For sale by the National Technical Information Service in Moffett Field, Calif, [Springfield, Va .
Written in English
|Other titles||Three component laser doppler velocimeter data acquisition and reduction system|
|Statement||L.C. Rodman, J.H. Bell, R.D. Mehta|
|Series||NASA contractor report -- 177390, NASA contractor report -- NASA CR-177390|
|Contributions||Bell, J. H, Mehta, R. D, Ames Research Center|
|The Physical Object|
A 3-component laser-Doppler velocimeter data acquisition and reduction system eBook: National Aeronautics and Space Administration NASA: : Kindle Store Skip to main content. Try Prime Hello, Sign in Account & Lists Sign in Account & Lists Author: National Aeronautics and Space Administration NASA. Buy A 3-component laser-doppler velocimeter data acquisition and reduction system (SuDoc NAS ) by L. C. Rodman (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : L. C. Rodman. An experimental comparison method is proposed for the verification of mean flow and turbulence measurements obtained with a three-dimensional laser Doppler velocimeter system. Such measurements can include large errors caused by problems unique to three-dimensional systems. Direct comparisons of laser and hot cross-wire measurements obtained in two-dimensional flows, as is the Cited by: 2. Updated daily! Explore all research articles, conference papers, preprints and more on ASSEMBLY LANGUAGE. Find methods information, sources, references or conduct a .
The measurement by a 3-d laser Doppler velocimeter of a turbulent flow has been numerically simulated. Errors associated with the probe volume geometry and the coincidence time window concept are by: 8. turbines, are considered. In these cases optical access problems are most severe and standard 3-component velocimeter arrangements which need a solid angle of 30 to 40 degrees for optical access can not be applied. A specially designed 3-component L2F system, see Schodl (), is on the market today and in use at different European institutions. to the data acquisition and reduction units by the receiving A miniature three-component LDV probe –0. 0. A sub-miniature Laser-Doppler Velocimeter(LDV) system was developed to make. The acquired information, such as the development of boundary and shear layer and transient vortex structure, is consistent with the measured data of wall pressure and visualization images of the flame, and shows a good agreement with Laser Doppler Velocimeter (LDV) by: 1.
Washington, DC: The National Academies Press. doi: / These measurements were obtained with a three-component Laser Doppler Velocimeter. SCALING OF THE FREE SURFACE JET Rajaratnam and Humphries () studied the mean flow characteristics of free surface jets when the free surface is located at the edge of the jet nozzle. Laser Doppler Velocimetry (LDV) is a compliment to PIV and is used for non-intrusive, time-resolved (kHz), point measurements of local fluid velocities and their fluctuations. Figure 1. A combined PIV-image (flow field) and OH-LIF (Laser Induced Fluorescence) image . Final data reduction/analysis: As described above, the data reduction program should be verified, and the initial data plotted together with the pretest estimates before leaving the test. In most facilities the only difference between the data available on site during the test and the final data is due to the use of more elaborate averaging. Suggested Citation:"Prediction of High Reynolds Number Flow Around Naval Vessels."National Research Council. Twenty-Fourth Symposium on Naval gton, DC: The National Academies Press. doi: /